Titlebook: On the Quanta Explanation of Vision; Maarten Anne Bouman Book 1949 Springer Science+Business Media Dordrecht 1949 human.physiology

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The Two-Quanta Hypothesis as a General Explanation for the Behaviour of Threshold-Values for the SeThis chapter dealt with the experiments on the threshold-values for various wave-lengths for periferal and for foveal vision.

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Some Properties of the Nervous System of the Visual Sense,The . are the conducting elements of the entire nervous system. (See Howell.)). They exist in a wealth of shapes and sizes, yet they all have many features in common: about the nucleus is an accumulation of plasm which is called the . or .. From the perikaryon parts of two kinds are given off: . and ..

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The Quanta Explanation and the Brightness-Impression for Various Times of Observation and Visual AnAs it can be expected that the effects described in the two-quanta explanation are important for the brightness impression, we performed experiments suitable for the study of these phenomena concerning brightness impression.

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Aspects of Vision,quanta explanation occured. These deviations were caused by physiological or psychological changes by the light of the test-flashes. In this chapter we discuss an aspect of vision and the other senses important for quantitative investigations.

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Summary,r rod vision of the dark adapted eye independent of the observer two quanta must be absorbed in the visual purple within about 0,02 seconds and within an area of the retina corresponding to a visual angle of about 10′ in order to perceive light.

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The Two-Quanta Explanation,ar as the size exceeds a certain value. Below this size, according to Ricco’s law, the threshold energy is independent of the size. By this reason the visual angle of the test spot must be chosen within this region of independence.

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